Comparaison de la performance d'absorbeurs à film tombant et bullaires pour des systèmes à absorption refroidis à l'air.
Comparison of the performance of falling film and bubble absorbers for air-cooled absorption systems.
Auteurs : CASTRO J., OLIET C., RODRÍGUEZ I., et al.
Type d'article : Article
Résumé
Small capacity, air-cooled NH3-H2O absorption systems are becoming more attractive in applications where the input energy can be obtained for free (e.g., solar energy, exhaust gases of engines), due to the increasing price of the primary energy. One of the main difficulties for a wider use of absorption machines is the necessary high initial investment. For this reason, the development of air-cooled systems could be an important achievement for low capacity applications. In this work, two types of air-cooled absorber have been modelled: (i) falling film flow; (ii) bubble flow. The two models have been validated with experimental data obtained from a developed testing device and published numerical results of other authors from another model. The agreement is acceptable for both cases. Finally, a parametric study has been done for air-conditioning and refrigeration in a mobile application taking advantage of the exhaust gases of the engine. In both cases, the performance of the bubble absorber has been higher. [Reprinted with permission from Elsevier. Copyright, 2008].
Détails
- Titre original : Comparison of the performance of falling film and bubble absorbers for air-cooled absorption systems.
- Identifiant de la fiche : 2009-2023
- Langues : Anglais
- Source : International Journal of thermal Sciences - vol. 48 - n. 7
- Date d'édition : 07/2009
- DOI : http://dx.doi.org/10.1016/j.ijthermalsci.2008.11.021
Liens
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Indexation
- Thèmes : Systèmes à absorption et adsorption
- Mots-clés : Comparaison; Refroidissement; Ammoniac-eau; Air; Système à absorption; Performance; Modélisation; Film tombant; Experimentation; Absorbeur
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Numerical study of falling film and bubble abso...
- Auteurs : CASTRO J., OLIET C., FARNÓS J., et al.
- Date : 21/08/2007
- Langues : Anglais
- Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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A MODEL OF AN AMMONIA-WATER FALLING FILM ABSORBER.
- Auteurs : PEREZ BLANCO H.
- Date : 1988
- Langues : Anglais
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- Auteurs : NIU X. F., DU K., CHEN T., et al.
- Date : 21/08/2007
- Langues : Anglais
- Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
- Formats : PDF
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Experimental study on ammonia-water falling fil...
- Auteurs : NIU X. F., DU K., XIAO F.
- Date : 06/2010
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 33 - n. 4
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Analytical investigation of two different absor...
- Auteurs : KANG Y. T., AKISAWA A., KASHIWAGI T.
- Date : 09/2000
- Langues : Anglais
- Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 23 - n. 6
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